Loom stop mechanism



Dec. 11, 1928.

H. DEMERS LOOM STOP MECHANISM Filed July 12. 1926 mam. M i Q RI-Patented Dec. 11, 1928.

UNITED STATES HONORE DEMERS, OF MANCHESTER, NEW HAMPSHIRE.

1100M s'ror MECHANISM.

Application filed July 12, .1926. senru No. 121,755.

This invention relates to looms and has for its general and principalobject to prevent an im roperly positioned shuttle from being pic 'ed. Amore particular object of the invention is to provide means for stoppingthe loom Whenever a shuttle is held in the shuttle box at an impropertime, said means operating to stop the loom upon the rearward movementof the lay, or prior to the picking operation, as distinguished fromstop mechanism of the type in which the loom is stopped on the forwardmovement of the lay when there is no shuttle in the shuttle box. Theimproper retention of a shuttlein the shuttle box may result from anumber of causes, as when a bobbin becomes jammedduring theweft-replenishing operation, so that the shuttle cannot be thrown out ofthe shuttle box, or when the shuttle-changing mechanism of apattern-weaving loom breaks, permitting a shuttle to enter the shuttlebox at one end of the lay when there is a shuttle at the other end ofthe lay. hen any of these events occurs, it is desirable that the loombe stopped immediately and prior to the picking operation, and thepresent invention rovides means for accomplishing this result m aneffective manner. Incidentally, the mechanism hereinafter described alsooper- 80 ates to stop the loom in the case of breakage of the protectorshaft spring which normally exerts a pressure upon a shuttle in theshuttle box through the binder and binder finger.

The foregoing and other objects of the in- 5 vention, together withmeans whereby the latter may be carried into effect, will best beunderstood from the following description of certain forms thereofillustrated in the accompanying drawings. It will be under- Stoodhowever that the particular constructions and arrangements described andshown have been chosen for purposes of exemplification merely, and thatthe invention, as defined by the claim hereunto appended, may beotherwise embodied without departure from the spirit and scope thereof.

In said drawings: J Fig. l is a diagrammatic side elevation of a portionof a dobby loom having the invention applied thereto, the parts beingshown in the relative positions assumed thereby when the loom isoperating normally.

Fig. 2 is a similar View illustrating the cooperation of the parts tostop the loom.

Referring to the drawing, the usual loom side is shown at 10, the lay at11,- the shuttle box at 12, a shuttle at 13, and harness mechanism at14. At 15 shown drop wire mechanism which acts through a shipper rod160, reversing lever 161 and link 162 upon knockoff devices, generallyindicated at 170, to actuate the usual shipper lever 180 to stop theloom when a warp thread breaks, the shipper rod moving rearwardly forthis purpose. The shipper lever 180 is illustrative of means forstopping the loom, and the usual clutch and clutch connections areomitted for simplicity of illustration as these parts are well known andrequire no description. The shuttle box 12 carries the usual binder 19which is pressed into engagement with the shuttle by a binder finger 20mounted on the usual protector rod or shaft 21 extending longitudinallyof the lay and pivotally mounted in suitable bearings on the latter.Cooperating with and preferably surrounding the protector shaft 21 isthe usual spring which acts to hold the binder finger in engagement withthe binder and to press the latter against the shuttle. The parts abovereferred to may all be of any approved construction, and the other usualparts of the loom are omitted or require no description as they arewell. known in the art and form no portion of the present invention.

In accordance with the present invention, the protector shaft 21 hasfast thereon a forwardly extending arm or dog 23 formed with a hookedend 24 which cooperates with one arm of a reversing lever 26. Theshipper rod 160 is moved forwardly to operate the knockoff device 170which actuates the shipper lever 180 to stop the loom, said shipper rod160 being connected with the drop wire mechanism 15 through thereversing lever 161 and link 162, as previously mentioned. To permit thedog 23 to move the shipper rod 160 forwardly to stop the loom uponrearward movement of the lay, the hooked end 24 of said dog, whendepressed into operative position, engages one arm of the reversinglever 26 pivoted to a bracket 27 secured to the loom side 10 at aconvenient point, the opposite arm ofsaid lever engaging a lug or trip250 on the shipper rod 160.

It will be seen that the dog 23 and the member engaged thereby are sorelatively arranged that the reaction of the latter member on the doghas substantially no component tending to press the binder finger andbinder against the shuttle, so that no strain tending to injure thelatter is imposed there on. Thus the movement of the lever 26, whenengaged by the dog 23, has a downward component tending to rotate theshaft 21 in the direction to relieve. the pressure 0f "the binder on theshuttle.

Having thus described my invention, 1 claim:

In aloom, in combination, a shipper lever, a drop Wire mechanism,ashipper rod, a reversing. lever connecting said shipper rod? tosaidndrop wire mechanism, a lay, a shuttle box onthe lay, a bindercarried by said shuttlebox, a binder finger engaging said blnder, meanslncluding a dog depressed by saidbinder finger When a shuttle is in saidshuttleibox,ya lug on said shipper rod, a

bracket, a lever pivoted intermediate its ends ment Withsaid lug to stopthe loom.

I In. testimony WhereofI aflix my signature.

HONOREDEMERS.

